Join an upload's releases by its par2 set's file names

The files of one upload often became several releases whose names
differ slightly: scene tracks apart from their album's nfo/sfv/par2,
"Vermaechtnis" beside a garbled "Vermächtnis", an index named
Die.Bergretter.S18E05... beside its video wishtv-diebergretter-s18e05.
The par2 merge joined releases only by first-16-KiB hashes, which
readable files never get. A name pass now looks, for every set the
merger finds, at the set poster's releases in its group posted within
12 hours: those whose files the set all names (without case or
punctuation, Latin-1-read UTF-8 read back; sidecars, par2 and images
aside) join the set's release, within the hash pass's file bound.
Merges are kept in release_merges as via 'name'. releases:merge-names
runs it over the sets found before; on 300 recent sets 22 merges of 147
releases, all one upload each.

Also: volumes split after .wmv, .mov, .mpg and other video extensions
share a stem ("Morning Lovers.wmv.001" to ".058" were 58 releases), in
the Rust edge and the TypeScript identity.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/functional/par2_merger.spec.ts

@@ -49,7 +49,7 @@ test.group('Par2Merger', (group) => {
     await db.table('par2_sets').insert({ set_id: setId, release_id: par2, files: 2 })
 
     const round = await new Par2Merger().round()
-    assert.deepEqual(round, { sets: 1, merges: 1, releases: 3, stems: 0, stemMerges: 0, stemReleases: 0, folded: { looked: 0, sidecars: 0, folded: 0 } })
+    assert.deepEqual(round, { sets: 1, merges: 1, releases: 3, nameMerges: 0, nameReleases: 0, stems: 0, stemMerges: 0, stemReleases: 0, folded: { looked: 0, sidecars: 0, folded: 0 } })
     const target = await db.from('releases').where('id', b).firstOrFail()
     assert.equal(target.files, 4)
     assert.equal(target.segments, 40)